| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc < %s -mtriple=aarch64-unknown-linux-gnu -reserve-regs-for-regalloc=LR,FP,X28,X27,X26,X25,X24,X23,X22,X21,X20,X19,X18,X17,X16,X15,X14,X13,X12,X11,X10,X9,X8,X7,X6,X5,X4 | FileCheck %s |
| ; RUN: llc < %s -mtriple=aarch64-unknown-linux-gnu -reserve-regs-for-regalloc=X30,X29,X28,X27,X26,X25,X24,X23,X22,X21,X20,X19,X18,X17,X16,X15,X14,X13,X12,X11,X10,X9,X8,X7,X6,X5,X4 | FileCheck %s |
| |
| ; LR, FP, X30 and X29 should be correctly recognized and not used. |
| |
| define void @foo(i64 %v1, i64 %v2, ptr %ptr) { |
| ; CHECK-LABEL: foo: |
| ; CHECK: // %bb.0: |
| ; CHECK-NEXT: sub sp, sp, #16 |
| ; CHECK-NEXT: .cfi_def_cfa_offset 16 |
| ; CHECK-NEXT: add x3, x0, x1 |
| ; CHECK-NEXT: str x3, [sp, #8] // 8-byte Folded Spill |
| ; CHECK-NEXT: str x3, [x2, #8] |
| ; CHECK-NEXT: ldr x3, [x2, #16] |
| ; CHECK-NEXT: add x3, x0, x3 |
| ; CHECK-NEXT: sub x3, x3, x1 |
| ; CHECK-NEXT: str x3, [x2, #16] |
| ; CHECK-NEXT: ldr x3, [sp, #8] // 8-byte Folded Reload |
| ; CHECK-NEXT: str x3, [x2, #24] |
| ; CHECK-NEXT: str x0, [x2, #32] |
| ; CHECK-NEXT: str x1, [x2, #40] |
| ; CHECK-NEXT: add sp, sp, #16 |
| ; CHECK-NEXT: ret |
| %v3 = add i64 %v1, %v2 |
| %p1 = getelementptr i64, ptr %ptr, i64 1 |
| store volatile i64 %v3, ptr %p1, align 8 |
| |
| %p2 = getelementptr i64, ptr %ptr, i64 2 |
| %v4 = load volatile i64, ptr %p2, align 8 |
| %v5 = add i64 %v1, %v4 |
| %v6 = sub i64 %v5, %v2 |
| store volatile i64 %v6, ptr %p2, align 8 |
| |
| %p3 = getelementptr i64, ptr %ptr, i64 3 |
| store volatile i64 %v3, ptr %p3, align 8 |
| |
| %p4 = getelementptr i64, ptr %ptr, i64 4 |
| store volatile i64 %v1, ptr %p4, align 8 |
| %p5 = getelementptr i64, ptr %ptr, i64 5 |
| store volatile i64 %v2, ptr %p5, align 8 |
| ret void |
| } |